CREATE  CONSTRAINT TRIGGER - Create a trigger to support a
       constraint


SYNOPSIS

       CREATE CONSTRAINT TRIGGER name
           AFTER events ON
           relation constraint attributes
           FOR EACH ROW EXECUTE PROCEDURE func '(' args ')'

   INPUTS
       name   The name of the constraint trigger.

       events The event categories for which this trigger  should
              be fired.

       relation
              Table name of the triggering relation.

       constraint
              Actual onstraint specification.

       attributes
              Constraint attributes.

       func(args)
              Function to call as part of the trigger processing.

   OUTPUTS
       CREATE CONSTRAINT
              Message returned if successful.


DESCRIPTION

       CREATE CONSTRAINT TRIGGER is  used  from  inside  of  CRE­
       ATE/ALTER TABLE and by pg_dump to create the special trig­
       gers for referential integrity.

       It is not intended for general use.


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